1.There are no viruses:
virustotal.com/gui/file/a204f1937167c329e7c62a96b65e19cebed0ffd1b3b92049d12a06dabafd8263/detection
If your antivirus says there is – it is a common false drawdown.
2. Note that this is only the first version of the program.
3.A great addition to “TreeSize”